On the plane down, I happened to sit next to Ted Cho, the CEO of Opinity. They are of course building a reputation system, and we had a lot of things to talk about where reputation meets URL-based, user-controlled identity.
Stepping into Alamo, I stoood in a long line right behind Dave Winer. That gave us quite some time to chat, mostly about why RSS is so threatening to so many established businesses. I tend to believe that so far, we have only seen the first wave of disruption; when it hits enterprise software, it will be equally if not more disruptive.
Kaliya, who is also here, just pointed out the IRC backchannel: #pcforum, who has about 10 people on it right now.